MAX3223CDW Equivalent & Substitute Parts

Part Overview

The MAX3223CDW is a 2/2 transceiver IC implementing full RS232 protocol functionality in a 20-SOIC surface mount package. This device operates across a 3V to 5.5V supply range and supports data rates up to 250kbps with 500mV receiver hysteresis. The MAX3223CDW is designated as Last Time Buy, indicating end-of-life status. Identifying equivalent substitute parts is necessary to ensure continued design support, maintain supply chain continuity, and access devices with extended product lifecycles or improved specifications.

Substiute Parts

MAX3223CDW

Texas InstrumentsIn Stock: 1461MAX3223CDW Datasheet

Current PartRFQ

MAX3223EIDBR

Texas InstrumentsIn Stock: 4311MAX3223EIDBR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MAX3223CDW is determined by the following core parameters:

• Protocol Compatibility: RS232 full transceiver functionality
• Channel Configuration: 2 drivers and 2 receivers (2/2 topology)
• Duplex Mode: Full duplex operation
• Supply Voltage Range: 3V to 5.5V compatibility
• Receiver Hysteresis: 500mV threshold specification
• Base Product Number: MAX3223 series designation
• Compliance: ROHS3 Compliant, REACH Unaffected

The MAX3223EIDBR qualifies as a manufacturer-recommended substitute. While it maintains identical protocol, channel configuration, duplex mode, supply voltage range, receiver hysteresis, and compliance certifications, it differs in package form factor (20-SSOP vs. 20-SOIC), data rate capability (500kbps vs. 250kbps), operating temperature range (-40°C to 85°C vs. 0°C to 70°C), and product status (Active vs. Last Time Buy).

Parameter Comparison

Engineering Selection Recommendations

The MAX3223EIDBR is the manufacturer-recommended substitute for the MAX3223CDW. Both devices maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment. The MAX3223EIDBR carries Active product status, providing extended availability and supply chain stability compared to the Last Time Buy designation of the MAX3223CDW.

Functional equivalence is established through identical RS232 protocol implementation, 2/2 transceiver configuration, full duplex operation, 500mV receiver hysteresis, and 3V to 5.5V supply voltage range. The substitute device offers enhanced performance specifications: 500kbps data rate capability (versus 250kbps) and extended operating temperature range (-40°C to 85°C versus 0°C to 70°C).

Package form factor differs between the two devices. The MAX3223CDW uses 20-SOIC (0.295", 7.50mm width) while the MAX3223EIDBR uses 20-SSOP (0.209", 5.30mm width). This difference requires PCB layout modification and footprint redesign. Pin-to-pin functional compatibility exists, but physical board-level integration differs.

Frequently Asked Questions (FAQ)

Q: Can the MAX3223EIDBR directly replace the MAX3223CDW without PCB modification?

A: Functional substitution is possible, but PCB layout modification is required. The devices use different package form factors (20-SOIC versus 20-SSOP), necessitating footprint redesign. Pin functionality and electrical characteristics are compatible.

Q: What are the key parameters that determine substitution eligibility?

A: Substitution is based on RS232 protocol compliance, 2/2 transceiver configuration, full duplex operation, 500mV receiver hysteresis, 3V to 5.5V supply voltage range, and ROHS3/REACH compliance status. The MAX3223 base product number ensures design compatibility.

Q: Does the MAX3223EIDBR offer performance advantages over the MAX3223CDW?

A: The MAX3223EIDBR supports 500kbps data rate (compared to 250kbps) and operates across -40°C to 85°C (compared to 0°C to 70°C). These represent enhanced specifications suitable for extended temperature environments and higher-speed applications within the RS232 protocol framework.

Q: Are there compliance or certification differences between these devices?

A: Both devices maintain identical compliance status: ROHS3 Compliant, REACH Unaffected, MSL 1 (Unlimited). No regulatory or certification barriers exist for substitution.

Q: Why is the MAX3223CDW designated as Last Time Buy?

A: Last Time Buy status indicates end-of-life designation. The MAX3223EIDBR, with Active product status, represents the current production alternative from Texas Instruments for continued design support and supply continuity.